African Natural History
On-line version ISSN 1816-8396
KLINGER, Herbert Christian and KENNEDY, William James. Hoplitoplacenticeras (H.) howarthi Collignon, 1970 (Cephalopoda: Ammonoidea) from KwaZulu-Natal, South Africa and Madagascar; intraspecific variation, dimorphism and affinities. Afr. nat. history (Online) [online]. 2011, vol.7, pp. 41-61. ISSN 1816-8396.
Additional specimens of the Campanian ammonite Hoplitoplacenticeras (H.) howarthi Collignon, 1970, as well as examination of Collignon's (1970) Madagascar! specimens of Hoplitoplacenticeras allow us to discuss the intraspecific variation, probable dimorphism and affinities of the species.
Keywords : ammonites; Hoplitoplacenticeras; Upper Campanian; intraspecific variation; dimorphism; affinities; Madagascar; KwaZulu-Natal; South Africa.